UCM BIO 001-01 - Lab Report 9 (14 pages)

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Lab Report 9



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Lab Report 9

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Pages:
14
School:
University of California, Merced
Course:
Bio 001-01 - Contemporary Biology
Contemporary Biology Documents
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Faloni 1 Name Ashlee Faloni Partners Celeste Mann Daniela Foster Date Conducted October 10 2018 Course and Section BIO 001L 001 Anatomy of a Plant SECTION I Plant Anatomy ACTIVITY IA b Examine the entire flower Note the position and numbers of sepals petals stamens and form of pistil Identify and count each of these structures for each of the two flowers in your possession Answer these questions for both flowers Q1 How do the size and color of sepals and petals compare The color of the petals of the first flower examined were pink while the petals were larger compared to the other examined as well as no sepal The second flower examined had orange colored petals that were medium length as well as having on sepal also known as the leaf on its peduncle Faloni 2 Q2 Are the number of sepals and petals the same on each flower On the pink flower first flower examined there appears to be no sepals and there are five pink petals on the flower Compared to the orange flower the second flower examined were it had six orange petals and one sepal Q3 How many sepals and petal does each flower have Mentioned in the question above the first flower have five pink petals and no sepal and the orange second flower had six petals and one sepal Q4 How many anthers are there on each flower The pink flower had five anthers which where the pollen grains come from and where the organisms pick up to pollinate another flower as well as others such as the wind to generate the flower population The orange flower had two anthers and the pink flower has a better chance because it has more pollen to be able to sweep away and continue the population Q5 Do both flowers have the same pistil structure Explain Both flowers do not have the same pistil structure because the pink flower has the pistil structure Faloni 3 hidden inside the stigma in order to help keep the eggs protected While the orange flower has the pistil structure open and predator may have a chance to destroy that section ACTIVITY IB Anthers Q6 Are you able to see dividing cells Underneath the microscope with the slide given you are able to see the dividing cells in the stamen because the flower needs to produce more pollen grains which is necessary for reproduction Q7 Examine a stamen Can you see where it might rupture to release pollen Underneath the microscope in the slide you can examine a section of purple where it is the center between the dividing cells and they might rupture due to the high exposure levels of humidity and creating internal pressure Q8 Can you find the pollen sacs Faloni 4 In the slide you can view the pollen sacs they look like large circular on the outside of the anther slide as well as the pollen sacs contain the pollen grains for fertilization Q9 Do they appear full of pollen grains or are they empty The pollen grains appear to be full of pollen grains because there is a lot of dots in the middle of the purple circles of the pollen sacs ACTIVITY IC Flower Pistil Observe and identify the structure of the pistil Answer these questions on your observations Q10 If the pistil is made up of more than one carpel is it possible to separate them If the pistil contain more than one carpel it is possible to separate the pistil because it has two anthers connecting into one pistil Q11 Can you see the small hairs around the stigma for trapping pollen grains Underneath the microscope you can view the stigma having small hairs from trapping the pollen Faloni 5 grains it looks like fuzz to trap the pollen grains for fertilization Q12 Approximately how far does the sperm have to travel to get to the egg cell When the sperm travels through the pollen tubes it reaches the ovule which is about 6 5cm the sperm travels to get to the egg cell into the ovary when the sperm starts at the anther Q13 Can you see any tissues that look like ovules describe what you see The tissues that look like ovules are small round green structures that resemble seeds and are bound at the bottom of the ovary SECTION II Fruit Morphology ACTIVITY IIA Simple Fruits Part 1 Apple Q1 How many seeds are there Faloni 6 The apple has five seeds in the apple in order to grow into more apple trees because apples are made to protect the seeds inside and travel when eaten to grow more trees Q2 How many carpels are there The apple has one carpel because the apple has a stem that the apple needs to grow onto the tree for nurtents Part 2 Sunflower Q3 Is there an opening at one end of the shell There is a tiny opening at the top of the sunflower seed because the sperm needs to enter in the opening for fertilization a Carefully split a seed open Q4 Is the seed inside still attached to the shell The seed inside the shell is still attached to the shell because it was protecting the seed from Faloni 7 predators Q5 Which end of the shell did the pollen tube enter The bottom of the shell where the pollen tube enters where the sperm enters the tiny hole for fertilization Part 3 Pea pod Q6 Are all the peas in the pod attached in the same manner and direction The peas in the pod are all in the same direction when opened because they needs to all get out of the protective layering a Find the tiny opening on each pea where the pollen tube entered Q7 How is each pea attached to the ovary wall The pea that is attached to the ovary wall the funiculi connectes the pea to the ovary wall Faloni 8 b Count the seeds in your single pod Q8 How many seeds are there in the pod There are six seeds in the pod ACTIVITY IIB Aggregate Fruits Part 1 Strawberry Q9 How many carpels are there in the flower The strawberry has one carpel as the stem for the flower where it grows Q10 Estimate the number of seeds on the entire fruit There is about 190 seeds on the entire fruit making it an aggregate fruit because it was formed from several carpels from the same flower Q 11 What anatomical part of the flower is the green structure at one end of the fruit Faloni 9 The sepal is the part where the green structure is at one end of the fruit ACTIVITY IIC Multiple Fruits Part 1 Pineapple Procedure a First examine the uncut pineapple specimen Q12 How many flowers formed this pineapple There are about 108 flowers formed on the pineapple because it is a multiple fruit which is a fruit formed from carpels from several flowers B Now examine the cut pineapple Identity the ovaries Q13 Can you remove an ovary You can remove the ovary of the pineapple because that is the part …


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